But we cannot just lift the bayonet as usual, there is a special shaped lever than impedes it.We have to remove the black shroud too, so first, remove its three screws.

We have to remove first the black shroud...

..and now the bayonet.

From the provided spring, we have to make a double hook like this.

It makes 18mm of length.

And now unscrew a bit this one.

The screwdriver shows where is the screw..

Now pass one of the hooks under the screw head, and tighten it , not too much.

It
is a good idea to drop a small
quantity of nail varnish on that screw, so it will not get loose.
Please let the varnish dry completely before mounting the lens on the
camera: the smell must disappear.

With the other hook, hold the aperture lever to its left position, so the iris will close. (provided the aperture ring has a close position)

closer image

So we can install the Leitax mount and the Zuiko lens is ready to shoot on a modern digital camera.